Means for relieving cooling-jackets of steam and indicating the circulation of water therethrough.



PATENTED OCT. 31, 1905.

J. E. MILLER. l MEANS FOR RBLIEVING COOLING JACKETS OP'STEAM ANDINDICATING THE CIRCULATION OF WATER THERETHROUGH.

APPLICATION FILED OCT. 6. 1902.

' A TTORNE Y5 W! TNESSES.

'UNITEI) STATES PATENT OFFICE.

JOHN E. MILLER, OF BELVIDERE, ILLINOIS, ASSIGNOR TO NATIONAL SEWINGMACHINE COMPANY, OF BELVIDERE, ILLINOIS, A CORPO- RATION OF ILLINOIS.

MEANS FOR RELIEVING COOLING-JACKETS F STEAM AND INDICATING THECIRCULATION OF WATER THERETHROUGH.

A Specification of Letters Patent.

Patented Oct. 31, 1905.

Application filed October 6,1902- Serial No. 126,120.

To ctZZ whom it may concern:

Be it known that I, JOHN E. MILLER, a citizen of the United States,residing at Belvidere, in the county of Boone and State of Illinois,have invented certain new and useful Improvements in Means for RelievingCooling-Jackets ofSteam and Indicating the Circulation of WaterTherethrough, of which the following is a full, clear, and exactspecification.

My invention relates to means for preventing the accumulation of steamin the coolingjackets of gasolene-engines and other internalcombustionengines, and, in fact, in coolingjackets generally where thecooling-water or other medium is kept in circulation through thejackets; and it has for its primary object to prevent the back pressureor downward pressure of the steam accumulating in the upper side of thejacket from depressing the cooling-water, and thus preventing freecirculation.

Another object of my invention is to provide means for at all timesindicating the cir-- culation of the cooling-water or other mediumthrough the circulating-passage, whereby the operator may be enabled todetermine whether the pump or other circulating means is operatingproperly. 7

With these ends in view my invention consists in certain features ofnovelty in thconstruction, combination, and arrangement of parts, bywhich the said objects and certain other objects hereinafter appearingare attained, all as fully described with reference to the accompanyingdrawings, and more particularly pointed out in the claims.

In the said drawings, Figure 1 is a diagrammatic view of my improvedapparatus, showing a portion thereof in vertical section; and Fig. 2 isa detail plan view of the pump and connections.

1 2 are the cylinders of an ordinary explosion-engine having suitablewater-jackets, as usual, to the under side of which are connectedinlet-pipes 3 4, respectively, which are in communication with a pump orother circulating device 5 through the intermediary of a neck 6, and 7is a storage-tank for the water or liquid which is connected, as usual,by pipe 8' and branches 9 10 with the upper sides of the.

jackets of cylindersl and 2, while 11 is a radiating or cooling coilcustomarily used ininstances where the water has to be used over andover again and which coil is connected by pipe 12 to the pump 5.

13 is an overflow-pipe extending upwardly into the tank 7 to a pointnear the top thereof to relieve the tank of air-pressure, steam, gases,&c., that might accumulate therein.

In applying my invention to a construction of this character, which is atypical illustration of the automobile motor-cooling system, theWater-jackets of the cylinders 1 and 2 are provided with vent-pipes orsteam-reliefs 14 15, which, if desired, may be conjoined in a singlepipe 16, having an outlet above the common level of thecirculating-passage, of which the tank 7 constitutes a part. As aconvenient means of accomplishing this the end of the pipe 16 is turnedupwardly, as shown at 17. the pipe being preferably carried first intothe tank 7 and then upwardly through the top thereof, and this upturnedend is inclosed by a shell 18, which is preferably composed of glass orother transparent material, so that the circulation may be observed, thebottom of the shell 18 being connected by aperture 19 with the tank 7.The upperend of the pipe 17 is shown with a plurality of small holes 20as a means of venting the same.

When the pump 5 is properly performing its function, a portion of thewater discharging from the upper sides of the water-jackets will risethrough the vent-pipes 14 and discharge into the transparent shell orglass 18 through the holes and thence into the tank 7 via aperture 19;but should the pump fail to operate steam will accumulate in the uppersides of the water-jackets and will consequently be visible in the glass18, thus indicating to the operator that either the pump is out ofaction or the circulating-passage needs replenishing with water or othermedium used for the cooling; but as long as the operator observes thedownward flow of water in the glass 18 he may know that thewater-jackets are entirely filled with water and the circulating meansis in perfect operation. It is understood, of course, that as the steamforms it rises through the vent-passage 14 15 and, if not condensed inthe storing-tank 7, eventually escapes through the overflow 13.

Having thus described my invention, What I claim as new therein, anddesire to secure by Letters Patent, is-

1. In an apparatus for the purpose described, the combination of awater-cooling jacket, a Water-circulating means comprising a passage, asteam-relief leading from said jacket to a point above the general levelof said passage, and a trahsparent connection between the upper end ofsaid relief and said passage whereby the circulation of the fluidthrough said relief may be observed, substantially as set forth.

2. In an apparatus for the purpose described, the combination of aWater-cooling jacket, a water-circulating means comprising a passage, anoverflow leading from said passage, and a steamrelief leading from saidjacket to a point above said overflow and thence back to said passage,substantially as set forth.

3. In an apparatus for the purpose described, the combination of thewater-cooling jacket, a reservoir for a supply of Water, a circulatingsystem for taking the Water from the reservoir to the jacket andreturning it to the reservoir, a passage constructed of transparentmaterial extending upwardly from and communicating With the reservoirabove the level thereof and above the level of all parts of saidcirculating system, and a branch pipe or connection extending from thetop of the jacket upwardly to the top of and discharging into saidtransparent passages.

JOHN E. MILLER. Witnesses GHAs. D. L001 1101* I. SEWELL.

